Abstract: Aiming at the 60L electric water heater, effects of different water quality and different temperature conductivity conditions by using electrochemical method, using water tank electronic magnesium anode, anode protection corrosion potential, corrosion rate and hydrogen evolution and the concentration of magnesium anode, corrosion protection effect of the electronic Yang compares. The experimental results show that the water potential of electronic anode protection after all in the effective scope of protection, and the potential value is relatively concentrated, and magnesium anode protection have certain protection and self loss phenomenon; protective effect of using magnesium anode and electronic anode corrosion protection significantly, corrosion rate of protection than the protection before the decline more than 10 times, the whole electronic anode is better than magnesium anode; magnesium anode in cathodic protection of the precipitated water tank of hydrogen anode protection than the electron precipitation amount of hydrogen, hydrogen in the same cavity volume in high concentration.

Key words: Water heater, Electronic anode, Magnesium anode, Corrosion protection